Grading-machine.



www

A. ANDERSON.

Gamma wmcHlNE. APPLICATION FILED SEPT: I7| |9|5 Lw, Patented DEG. 4,1917;

4 SMEETSSHEET I.

uuu u xiv/775455556 i? @f www@ A. ANDERSON. GRADING MACHINE. APPLICATION FILED SEPT. I7. 1915.

4 SHEETS-SHEET Si.

A. ANDERSON.

GRADING MACHINE. APPLICATION FILED SEPT- l, I9|5 Patnted Dec. 4, 19171 A. ANDERSON.

- GRADING MACHINE. APPucATloN min SEPT. l1. |915.

Patented Dec. 4'., 191?.

4 SHEETS-SHEET 4.

ligeaa'eaja.

MEL

cnanrncnacnnm;

4application filed September 17, 1915. Serial lilo. 51,2%.'

To all guwmnt cm1/,y concern."

Be 1t lmown that l, Amt ilinnnnson, a citizen ofthe United States, resident of St.

l Paul, county of Ramsey, and State of Mindig a deep and more abrupt ditch, or raising it higher in the case of cutting down.

high banksl A further objectA of theinvention is to provide means for rotatably supporting the scraper blade, permitting it to be turned to vary its angle with: respect to the draft line of the machine.

@ther objects of the invention will appear i fromthe following detailed description.

`'lhe invention consists generallyin varlous constructlons and combinatlons hereinafter described and particularly pointed out in the claims.

lln the accompanying drawings forming part of this specication,

' Figure 1 is a side elevation' of a grading machine embodying my invention, the blade standing substantially straight across or at right angles to the line of draft.

f llig. 2 is a longitudinal section of a forward portion of the machine. f

4Fig. 3 isia plan view of a portion of the I machine showing particularly the circle for with 'its forward end dropped for the purthe forward end, with a forward axle 4 carrying wheels 5 and a suitable king-bolt 6. At the rearend of the frame there is a Specification of Letters Patent.

ratentea nee?. a, iai a platform for the operator, and the rear axle 8 having carrying^wheels 9. ll prefer v to provide a curved plate 10 having a recess formedl in its lower edge to receive a steel blade 11 that is secured to the plate lOby suitable means such as a bolt 12. 'llhe plate l0 is provided with'brackets 13 and 1d and annnason', orjs'r. rant., niivnnsora, assmnoa ro anssnnr. manna iiiaimi racrnanve ce., or ninnnaronrs, iinrnnsora, a cearonarmn.

said brackets 13 are pivotally connected to the lower end of hangersV 15 and the brackets 1d are adjustably connected to the hangers 15 by bolts 15 which 'may be engaged with either one of a plurality of holes 16. This con-struction permits tilting the vcurved plate 10 and the blade 11 in respect to the hangers 15. rllhe bolts 15 are now shown. .engaging the inner holes the bracket 1d. lf these bolts are moved the outer holes 16 the pressure of the earth on the blade. 11 will tilt the upper edge of the curved plate 10 forward until the bolt 15 strikes the rear edge of the hanger .15. 'lhe hangers 15 are secured to a depending Harige 17 of a i circle or ring 18, and brace rods 19 connect the outer portions of the scraper blade with the rear portions of the ring 18 and its depending dange 17. A.

'lhe horizontal portion of the ring 18 is provided on its under surface with gear teeth 20, meshing with a pinion 21 on a shaft 22 which has bearings in a stationary .plate 23. A coupling rod 24: has a universal ]oint connection with the shaft 22 and with a ost 25 that is provided with an Voperating w eel 26, convenient to the operators platform 7.

Brackets 28 are referably provided near the rear of the'circ e or ring 18 and a brace; bar 29 preferably extends transversely of the dll ring 18 and is preferablybolted to the' brackets 28 at 30. The coupling rod 2d prefg erably passes through the bar 29 and'has a loose bearing therein. Wlhenfthe wheel 2d is revolved power will be transmitted to pinion 21 engaging the teethjof the ring 18 andl revolving the same A and the scraper .blade supported thereby', and" changing the angle of the scraper blade with respect t'o the line of draft of the machine.

.llt will be seen that the ring 18 isof right.

ldd

angle form'in cross section having the depending flange 17 andthe horizontal main ring portion with the series of gearteeth 20 on the under side of saidhoizollltal portion ,.the bars 41 and their v and the of the ring. Located in this position the gear teeth are protected from accidental breakage and it is impossible for dirt to collect between the teeth as lwould be the case if the gear teeth were on the upper surface of the ring. I also prefer to provide upon the edge of the ring a series of teeth 31. These teeth move horizontally as the ring' is turned in a guiding recess 32 in the plate 23. The brackets 28 are also preferably provided with flanges extending horizontallyunder the teeth 31 and these flanges and the guide 32 hold the ring 18 and guide it in its vcircular movement; A standard 33 preferably hollowy and having an inclined upper surface 36 is mounted on the plate 23 and'has a guide within it for a locking bolt 34, which is adapted to enter the spaces between the teeth 31 on the ring 18 and lock the ring in any position. at .which it'may be set.y A springl 35 normally holds thefpin 34 in its locking position.

A wedge-shaped plate 37 is arranged to slide on the inclined surface 36 ofthe vstandard' 33 its upper edge being in engagement with a pin 38 in the upper end of the bolt 34. The forward end of the plate 37 has a beveled surface 40 on which the in 38 ridesto hold the plate and bolt 34 in their releasing position with the end of the bolt free from the teeth 31 on thel ring 18. Whenever desired a grasp on the operating rod 39 will move the plate 37 lengthwise permitting the bolt 34 to be forced downward into engagement with the teeth 31of the ring 18, thus securely locking the ring with the scraper blade at any'desired angle.

I also provide-'theI forwardly extending bars 41 rigidly secured to the outwar yextending ends 42. The ends ofthebrace bar 29 are also preferably bolted outwardly turned portion 42 .of the bars 41. The plate 23 is preferably provided l with upwardly turned iianges to which the bar s 41 are bolted at 43.

It will be observed that the bars 41, the plate 23, the brackets 28 and the brace-bar 29 to ether form an exceedingly rigid frame of suhstantially triangular form upon which the circleor Vring 18 carrying .the scraper blade isrotatably supported.

Thefibase of the triangle is formed by the brace: bar 29 and the outwardlyfturned ends 42A of the bars 4.1. e This ypart of the' triangular frame is toward the rear while the converging bars 41 extend forwardly apex of the frame is arranged preferably. near but in the rearI of the forward axle 3; V- Lnksf44 are provided having their lower end pivotally'connected with the ends 42 of lilly connected'with crank arms-45 provided on 4horizontal Shafts 46'j911r11a1d bear,

p brackets 28 r f and the late 23, and preferably having the `Araised or lowered thereby upper ends are pivotings 47 on the machine frame.- These shafts are provided with worm wheels 48 and are revolved through worm gear 49 operated by suitable wheels 50' provided on each sideof the machine adjacent to the platform 7. The effect of this manipulation of handwhecls upon the blade is conditional, however, depending` upon the lengthwise position of the lade relative to line of draft. If the blade be set square across the line of draft it is aifectedto the full extent of the movement of the cranks 45.. If'the position of the blade be at an angle less than ninety degrees from line of draft, ment of vcranks 45 is consumed in a transverse tilt of the blade and consequently lost for the purpose of raising and lowering the ends of the blade. If the position of the blade be parallel to the line of draft, or nearly so, movements of cranks 45 are en- Itirely or nearly used up in the transverse tilting of the blade, and the ends of same are not individually affected insofar as concerns raising or lowering.

The forward ends of the bars 41 constituting the part of the supporting frame for the ring or circle carrying the scraper blade converge and have secured to their forward end a segmental toothed rack 56, that is vertically arranged and -has its teeth in en. gagement with a pinion 57 on' a shaft 67. I also provide the converging draft bars 62 pivoted to the bars 41 and the plate 23 by the pivot 66. The forward ends of these bars converge and have arranged between them preferably a cast block 63 through which the king-bolt 6 passes. The bars 62 together with the block 63 form a V-shaped rame, the rear end of which is pivoted to the bars 41 and the plate 23 and the forward end of which is engaged by the kingbolt 6 upon which said frame pivots. This V-shaped frame formed by the draft bars 62 and block 63 may properly be designated a draft frame. The shaft 67 is mounted in bearings provided at the forward ends of the draft bars 62, and formed integrally with the pinion- 57 or suitably secured thereto is a'dworm gear 58, a worm- 59 is mounted in suitable bearings and is adapted to engage the worm gear 58. The worm 59 is coupled to an operating rod 60 having an operating wheel which is within convenient reach of the operator of the machine. worm gear is revolved the rack 56 will be tilting the bars 41 or causing the same to turn on the pivots Q66. This tilts the frame composedlof plate 23, brackets 28, brace-bar 41, and has its fullest effectl on lthe blade wheh the same is set paralle` or nearly so to the line of draft, and loses said effect as angleof line of draft and blade increases.VV

.Movement of cog-rack 56 is, therefore, comelementary to movement of cranks 45 in part of said move- When the 29 and side bars supporting frame,

naaaeaa poducing a raise or klowering of eitherend o may have relative to line 'of-draft,

It will be seen that the means for raising and lowering the forward end lof the frame that supports the ring 18 and scraper blade is supported upon and carried by the draft frame formed of the bars 62 and the block 63. l i

The draft pole is indicated at 64:, and the operating rod 65 for shifting the pole is shown mounted on a portion of'the frame. This shifting mechanism, however, forms the subject-matter of an application for Letters Patent filed by` me June 12, 1915, Serial No. 33,711. This mechanism, therefore, needs no further description herein.

ln the operation of the machine when the scraper blade is set at the usual angle of about 30 degrees with respect to the draft line, the forward end of the scraper may be raised or lowered for the purpose of causing` the end of the scraper blade to cut into a bank which it will do when the forward end of said blade is elevated, or to cut a ditch lwhich it will do when the forward end o ther blade is depressed. Any desired'amount of elevation or depression on the forward end of the scraper blade may be secured by the device herein described.

r1`he scraper blade may i be quickly reversed so that either end of the blade will be ahead and the material taken up by the scraper blade will pass along the surface of that blade and be discharged at its end.`

VThe details of the 'construction may be varied in many particulars without-departlng from my invention.

l[ claimeas my invention:

1. The combination, with a mainframe and forward and rear'wheeled axles upon which said frame is supported, of a longitudinally extending blade-supporting frame arranged beneath said main frame, hangers located at opposite sides of the machine and portin frame, a longitudinally extending draft frame havin its rear end pivoted to said blade-supporting frame near the longitudinal center thereof, means'pivotallyconnecting the forward end of said draft frame to the forward axle of the machine, and meansl upon said draft frame for raising and lowering the forward end o f said bladesubstantially as described.

2. rThe combination, with .a main frame and forward and rear wheeled axles -upon which said frame-is supported, of a'longitudinally extending triangular blade-'supportin frame arranged beneath said main frame, angers located at opposite sides of the.

machine andsupporting the rear end of sald blade-supporting frame, a longitudinally `extending ll-shaped draft-frame arranged outside of said blade-supporting frame andA the blade regardless of what position it thereof,

rear end of said blade-supter thereof, means pivotally connecting the forward end of said draft frame to the forward ax-le of the machine', and means upon said draft frame for raisingV and lowering the forward end of said blade-supporting frame.

3. The combination, with a main frame and yforward and rear wheeled axles upon which said frame is supported, of a longitudinally extending blade-supportingA frame arranged beneath said main frame, hangers located at opposite sides of the machine and supporting. the rear end of said blade-supporting frame, a revoluble ring secured to said blade-supporting frame, a scraper blade rigidly secured to saidiring, a longitudinally extending draft frame having lts rear end pivoted to said blade-supportin frame near the longitudinal center thereo means pivotally connecting theforward end of said draft frame to the forward axle of the machine, and means upon said draft frame for raising and lowering the forward stantially as described.

4. The combination, with a -main frame and forward and rearl wheeled axles uponwhich said main frame is supported', of a longitudinali extending triangular bladesupporting rame arranged beneath said main frame, hangers located at ,o posite sides of the machine and carrying t e rear end of said blade-supporting frame, a -revoluble ring ysecured to said blade-supporting frame, a/scraper blade rigidly secured to said ring, a longitudinally extending draft frame arranged outside of said blade-supporting frame and having its rear -end pivoted thereto near the longitudinal center ward end of said draft frame to the forward `ax1e of the machine, and means upon said frame for raising and loweringthe forward end of said blade-supporting frame.

5. Thev combination, with a wheeled frame, of a revoluble ring, Va sera rigidly secured to said ring, a lon tudin'ally extending frame by which said ruig is supported and guided, means for revolving said ring and the blade carried thereby on said frame, draft bars having their rear ends a vertical pivot connecting the foraia er" blade f y iin pivotallyconnected tofsaid frame near the longitudinal center thereof and having their forward ends pivotally supported upon the end of said frame, andmeans carried by aaa x v front axle, means for suspending the rear said draft bars for raising and lowering the f forward end of said frame.

l 6. The combination, with rigidly secured to said ring, a longitudinally extending blade-supporting frame to which said ring 1s secured, means for ,revolvaaa . 2% a wheeledyl frame, of a jrevoluble ring, a scraper bladeY n ing said ring and the blade carried therebjr raising and lowering the forwaird end of supporting frame and its forward end pivon said frame, independent means for sussaid blade-supporting frame.

pending, raisin' and lowering each side of In witness whereof, I have hereunto set the rear end o said frame, a draft frame' my hand this 24th day of August, 1915. having its rear end pivoted to Said blade' otally connected to .the forward axle of the Witness: machine, and means on said draft frame for ESTHER LINDSTEDT. 

